sodium sulfate diatomite

sodium sulfate diatomite

Sodium sulfate–diatomite composite materials for high ...

2015-9-1 · Sodium sulfate in the composite functions as a phase change material (PCM) and diatomite as a structural skeleton for shape stabilization. It is found that sodium sulfate and diatomite have an excellent chemical compatibility with the PCM melting temperature at around 880 °C. It is shown that the composite containing 45% diatomite gives an ...

Sodium sulfate–diatomite composite materials for high ...

2017-5-9 · Sodium sulfate–diatomite composite materials for high temperature thermal energy storage Yue Qina,b, Guanghui Lengb,XiangYua,⁎, Hui Caoc,GengQiaoc,d, Yunfeng Daie, Yelong Zhangf, Yulong Dingb,c,d,⁎⁎ a China University of Geosciences, Beijing 100083, China b Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China c Institute of Particle Science &

Sodium sulfate–diatomite composite materials for high ...

Sodium sulfate and diatomite are selected for high temperature applications. • The composite materials are found to fail at temperatures above 1000 °C. • The composite material containing 45% diatomite gives an optimal formulation. • The optimal composite has an energy density over 360 kJ/kg in

Sodium sulfate–diatomite composite materials for high ...

Qin et al. [28] explored the composite fabricated by sodium sulfate and diatomite for high temperature TES application. They reported that this composite showed an optimal formulation in terms of ...

Pore structure modified diatomite-supported PEG

2016-9-1 · Qin, Y. et al. Sodium sulfate–diatomite composite materials for high temperature thermal energy storage. Powder Technol. 282, 37–42 (2015). CAS Article Google Scholar

Diatomite: A promising natural candidate as carrier ...

In this study, polyethylene glycol (PEG), lithium nitrate (LiNO 3), and sodium sulfate (Na 2 SO 4) were respectively employed as the low-, middle- and high-temperature storage medium. A series of novel form-stable phase change materials (fs-PCMs) were tailor-made by blending diatomite and the three PCMs via a vacuum impregnation method or a ...

Diatomite: A promising natural candidate as carrier ...

2015-7-1 · Diatomite with high thermo-chemical stability was first employed as supporter to enhance the thermal property of middle- and high-temperature PCMs. Based on the above discussion, the conclusions can be drawn as follows: (1) The maximum load of PEG, lithium nitrate, and sodium sulfate in the composite fs-PCM could respectively reach 58%, 60% ...

Optimizing Phenanthrene and Anthracene Oxidation by

2015-11-10 · diatomite added slowly to a mixture of 112 mL of aqueous solutions containing ferric sulfate (366 g L−1) and ferrous sulfate (183 g L−1) in an intensely stirred reactor. In this suspension, a solution of NaOH (5 mol L−1, 220 mL) was added in four steps for 1 h.

Separation of azodicarbonamide from surface of diatomite

2018-5-5 · Sodium sulfate–diatomite composite materials for high temperature thermal energy storage [J]. Powder Technology, 2015, 282: 37–42. Article Google Scholar [12] AN O, G REN R, ZGÜR C. Purification of diatomite powder by acid leaching for use

Pore structure modified diatomite-supported PEG

2016-9-1 · Qin, Y. et al. Sodium sulfate–diatomite composite materials for high temperature thermal energy storage. Powder Technol. 282, 37–42 (2015). CAS Article Google Scholar

Optimizing Phenanthrene and Anthracene Oxidation by

2015-3-11 · The treatment with sodium persulfate demonstrates advantages over hydrogen peroxide activation. Among the reasons is that the activated persulfate with the modified diatomite can produce sulfate and hydroxyl radicals. Thus, it can degrade a wide range of the different classes of contaminants.

(PDF) Use of diatomite as partial replacement for Portland ...

The expansion of the cement mortar bars immersed in 5% sodium sulfate solution decreased with increasing diatomite content and generally the sulfate resistance of the mortars was higher than that ...

Optimizing Phenanthrene and Anthracene Oxidation by

2015-11-10 · diatomite added slowly to a mixture of 112 mL of aqueous solutions containing ferric sulfate (366 g L−1) and ferrous sulfate (183 g L−1) in an intensely stirred reactor. In this suspension, a solution of NaOH (5 mol L−1, 220 mL) was added in four steps for 1 h.

Preparation of a modified diatomite filler via ...

2018-2-2 · In this study, we sequentially modified diatomite (DM) particles with sodium dodecyl sulfate and polyethyleneimine with an impregnation method. Modified DM was used as both a filler and an anionic trash catcher in the papermaking process. The ...

Barium Sulfate For Plastic

Blanc fixe isproduced by treating this solution with sodium sulfate to precipitate ultrafine barium sulfate. Diatomite products are generally differentiated by process and particle size. Flux-calcined diatomite is calcined at about 1200oC with sodium carbonate or sodium chloride.

Use of diatomite as partial replacement for Portland ...

The aim of the present study is to investigate the use of diatomite as a partial replacement for cement in the production of cement mortar. Diatomite was used at 0%, 5%, 10% and 15% replacement by weight for cement while sand and water quantities were kept constant. Compressive and flexural strength, freeze–thaw resistance, sulfate resistance ...

Diatomite-entrapped hydrosulfate catalysts for the ...

2015-1-31 · Diatomite-entrapped hydrosulfate catalysts with the enhanced acidity were prepared by impregnation and 20 wt% KHSO 4 /diatomite was selected as a heterogeneous catalyst for the catalytic nitration of toluene. The characterization of the catalyst by X-ray diffraction, Scanning electron microscopy, Brunauer–Emmett–Teller, Fourier-transform infrared spectroscopy and NH 3 temperature ...

聚乙烯亚胺改性硅藻土的制备与表征-Preparation and ...

Abstract: Using polyethyleneimine(PEI)and sodium dodecyl sulfate as modifiers, the surface of diatomite particles was modified by impregnation method. The adsorption of diatomite to PEI was investigated. The morphology, particle size, and Zeta potential of

(PDF) Sodium Sulphate Effect on Cement Produced with ...

sodium sulphate exposure at the end of the days of wa ter curing before the determination of mass change, the length change, and the compr essive and exural strengths tests. e

Pore structure modified diatomite-supported PEG

2016-9-1 · Qin, Y. et al. Sodium sulfate–diatomite composite materials for high temperature thermal energy storage. Powder Technol. 282, 37–42 (2015). CAS Article Google Scholar

(PDF) Use of diatomite as partial replacement for Portland ...

The expansion of the cement mortar bars immersed in 5% sodium sulfate solution decreased with increasing diatomite content and generally the sulfate resistance of the mortars was higher than that ...

Optimizing Phenanthrene and Anthracene Oxidation by

2015-3-11 · by Sodium Per sulfate and Fe-Modified Diatomite. Using the Response Surface Method. Celyna K. O. da Silva & Marilda M. G. R. Viann a & Edson L. Foletto & Osvald o Chiavone-Fil ho &

Barium Sulfate For Plastic

Blanc fixe isproduced by treating this solution with sodium sulfate to precipitate ultrafine barium sulfate. Diatomite products are generally differentiated by process and particle size. Flux-calcined diatomite is calcined at about 1200oC with sodium carbonate or sodium chloride.

Diatomite-entrapped hydrosulfate catalysts for the ...

2015-1-31 · Diatomite-entrapped hydrosulfate catalysts with the enhanced acidity were prepared by impregnation and 20 wt% KHSO 4 /diatomite was selected as a heterogeneous catalyst for the catalytic nitration of toluene. The characterization of the catalyst by X-ray diffraction, Scanning electron microscopy, Brunauer–Emmett–Teller, Fourier-transform infrared spectroscopy and NH 3 temperature ...

Inorganically modified diatomite as a potential prolonged ...

Inorganic modification of diatomite was performed with the precipitation product of partially neutralized aluminum sulfate solution at three different mass ratios. The starting and the modified diatomites were characterized by SEM-EDS, FTIR, thermal analysis and zeta potential measurements and evalu

Diatomite: Its Characterization, Modifications and ...

Diatomite: Its Characterization, Modifications and Applications. Asian Journal of Materials Science, 2: 121-136. Diatomite rock is a loose, earthy or loosely cemented porous and lightweight rock of sedimentary origin, mainly formed by fragments of armor (skeletons) of diatom algae: diatomea and radiolaria. Diatomite is a microscopic diatom alga ...

AP-42, CH 11.22: Diatomite Processing

2015-9-10 · 11/95 Diatomite Processing 11.22-3 conversion of iron to complex sodium-aluminum-iron silicates rather than to the oxide. Further milling and classifying follow calcining. 11.22.2 Emissions And Controls1-2 The primary pollutant of concern in diatomite processing is particulate matter (PM) and PM less than 10 micrometers (PM-10).

改性硅藻土吸附壳聚糖-胍盐微球及其在抗菌纸中的应用 ...

Meanwhile, the diatomite was modified using the sodium dodecyl sulfate (SDS), and the adsorption of chitosan-guanidine salt nanoparticles on the modified and native diatomite were studied. The results showed that no new peaks were found from the complex of ...

醚菊酯检测方法(Ethofenprox detection method).doc

2017-10-16 · Adding proper amount of anhydrous sodium sulfate, from time to time, oscillation, mixing, placing 15 minutes, filter into the grinding mouth decompression concentrator. Then the 20mL hexane washing flask, the residue washing solutions on filter paper, repeated two times, with two washing liquid in vacuum concentrator, Remove hexane below 40 degrees celsius.